hi all, i have seeded a new lawn last year with tall fescue. i first verticut very thoroughly to loosen and help remove some of the crabgrass present. this year i want to overseed with fescue( watersaver w/ RTF) to fill bare spots and generally thicken. most crabgrass applications require 3-4 mos before seeding. this puts me into june. not an ideal time in kansas to seed. what are my options?